y intercept from an equation:

Replace the x variable with a zero, then solve for y.

Quadratic Example(vertex form) | Exponential Example |

Rational Example |

y intercept from an equation:

Replace the x variable with a zero, then solve for y.

Quadratic Example(vertex form) | Exponential Example |

Rational Example |

Rational Example:

Use the y= button to put the equation on the calculator.

Use the graph button to see if you can see the graph cross the y axis. Use ZOOM or WINDOW to change what you see if you need to.Then select CALC (use 2nd to get to words above the buttons) and select VALUE from the menu.

Hit ENTER. At the bottom of the screen, you can enter an x value for it to use to calculate the y value. Put 0 in, all y intercepts have an x value of 0. The y intercept value will show up at the bottom of the screen,and the blinky will show the location of the point.